Furnace wall



March 27, 1928. 1,663,977

R. A. FORESMAN FURNACE WALL Filed May 22, 1925 \& RJLForcsmon WITNESSES:INVENTOR r BY ATTORNE Patented Mar. 27, 1928.

UNITED STATES PATENT OFFICE.

ROBERT A. FORESMAN, OF MOORE, PENNSYLVANIA, ASSIGNOR '10 WESTINGHOUSEELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

FURNACE WALL.

Application filed May 22, 1925. Serial No. 32,111.

I This invention relates to high temperature furnaces and it has for anobject to provide a furnace of the character described with a wall whichshall be so constructed as to withstand the high temperatures of thefurnace without rapid deterioration and which shall be capable of beingmaintained at a sufficiently low temperature to prevent the adhesion offused slag. In my copending application, Serial No. 718,942. filed June9, 1924 and assigned to the \Vestinghouse Electrio and ManufacturingCompany, I disclose a refractory wall consisting of a series ofvertically disposed tubes to induce a rapid circulation of cooling fluidtherethrough, and with an impervious lining inter-fitting therewith.

The main object of this invention is to produce an improved lining ofthe character designated which shall allow of expansion or slightdeformation of the tubes without danger to the lining and which willreturn to its original shape upon cooling. A further object of myinvention is to produce a device of the class described which shall besimple and inexpensive, yet rugged and durable and which shall permit ofready assembly and disassembly.

These and other objects of my invention which are more manifest in thefurther description may be attained by the apparatus illustrated in theaccompanying drawing in which Fig. 1 is a View of a furnace wallembodying my invention, the view being taken from the side away from thefurnace; F ig. 2 is a plan view, partially in section of the wall shownin Fig. 1; Fig. 3 is a vertical section taken on the line IIIIII of Fig.1 and Fig. 4 is a plan view partially in section of another embodimentof my device.

In the drawing I show one embodiment of my device in which double platesextend between the tubes, the main plate having a projection extendingthrough an aperture in the other plate and being secured in a suitablemanner.

Referring to the drawing for a more detailed description of my inventionI show at 10 a furnace wall for a high temperature furnace. The wall iscomposed of the tubes 11 and the lining members 12. Each lining memberis formed of a front member 13 and a. rear member 14. These members arein contact along a plane which substantially coincides with the planepassing through the center lines of the tubes 11. Each rear member 11';has two lugs 15 and 16 and is provided with an opening 17. Each frontmember 13 is provided with a. lug 18 which is adapted to extend throughthe opening 17 in the rear member 14. The lug 18 is provided with anopening 19 to receive a wedge 21, the rear wall of this opening beingslightly bevelled the better to engage the wedge. The wedge 21 will bemade of such size and material that upon the appli-. cation of pressureit may tend to become slightly bowed.

In assembling my device, the front member is placed between the tubesfrom the interior of the furnace and the rear member 14 is placedbetween the tubes from the outside of the furnace, the hole 17 receivingthe lug 18. The wedge 21 is then inserted through the opening 19 andforced far enough to bring the members 13 and 14 in contact. Should thetube expand, the members 14 and 13 will be forced slightly apart.

This draws the lug 18 toward the member 14 and causes a bowing of thewedge 21 which is ulled forwardly at 22 and pushed rearward y at 15 and16. Upon cooling of the furnace and contraction of the tube 11, thewedge 21 resumes its normal shape and forces the front and rear members13 and 14 back into contact. In case there is any permanent distort-ionin any part of the wall, this can be compensated for by movement of thewedge 21. In case it is desired to remove the lining members, it is onlynecessary to drive out the wedge 21 when the front and rear members 13and 14 can be removed from the tubes.

In order to permit the inner member to be removed from the outside ofthe furnace, I may make the inner member 18 of the shape shown in Fig.4, in which case the wall is disassembled entirely from the outside inthe following manner: The wedge 21 is first removed. This permits theouter wall member 14 to be removed. The main wall member 13 is thenmoved inwardly and swung so that the cylindrical surface 31 contactswith the tube 11. The inner wall member is then rotated about the centerof the tube as a center until it is clear of the adjacent tube when itis moved outwardly clear of the tubes. If the tubes are quite closetogether, the corners of member 13 are cut off as shown at 32.

While I have shown my invention in but two forms, it Will be obvious tothose skilled in the art that it is not so limited, but is susceptibleof Various other changes and modifications, without departing from thespirit thereof, and I desire, therefore, that only such lin'iitationsshall be placed thereupon as are imposed by the prior art or as arespecifically set forth in the appei'ided claim.

What 1 claim is:

In a furnace Wall the combination With a pair of spaced tubular members,of an inner lining member bridging the space between the tubular membersand engaging the tubular members at points arranged at one side of aplane passing through the longitudinal center lines of the tubularmembers an outer lining member also bridging; the space between thetubular members and engaging the tubular members at points neeaewarranged at the other side of the plane passlng through the longitudinalcenter llnes of the tubular members, the inner and outer lining membersbeing arranged in juxta aperture in the portion thereof extending beyondthe outer member, and. alocking member extendmg through the aperture inthe projection and engaging the raised portions of the outer member.

In testimony whereof, I have hereunto subscribed my name this first dayof May, 1925.

ROBERT A. FORESMAN.

